摘要
对于矩阵求逆和线性方程组的条件数的极小化给出了一些充分和必要条件 ,得到了一些等价条件 ,揭示了两种矩阵条件数的极小性之间的联系 .
The author gives some necessary and sufficient conditions for minimizing condition numbers of matrix inversion and linear system. Some equilence conditions are obtained, the relation between minimality of both matrix condition numbers is described.
出处
《上海大学学报(自然科学版)》
CAS
CSCD
2000年第4期287-290,共4页
Journal of Shanghai University:Natural Science Edition
关键词
非奇异性
条件数
置换阵
矩阵条件数
nonsingularity
condition number
permutation matrix
linear system